The problem, as any same sex marriage advocate will tell you, is that President Obama’s position — or at least stated position — is that he’s still “evolving” on the topic. Many same sex marriage fans think that’s dubious, and fully expect the president to “evolve” to supporting it shortly after the November election (win or lose.)

Last summer, as we told you then, a group of gay advocates showed up to a White House meeting with him wearing buttons that said, “Evolve Already.” As one advocate told me, Obama has already done so much for LGBT folks, coming out for same sex marriage isn’t going to lose him anybody that’s on the fence now.

Key stat: Five swing states — worth 75 of the 270 electoral votes needed to win — have constitutional bans on same sex marriage.

Pollsters like Amy Simon of Oakland, Calif. — one of the nation’s foremost pollsters on same sex marriage issues — say that marriage is NOT a deal-breaker issue with voters who are torn between Republican Mitt Romney and Obama on other issues.

This could be getting ugly soon. Remember that the chair of the Democratic National convention — Los Angeles Mayor Antonio Villaraigosa — publicly supports adding a plank supporting gay marriage to the party platform.

And even First Lady Michelle Obama seemed to be in front of both Biden and Tony V. when she appeared at a March 30 fundraiser in San Francisco. Or is she also still “evolving”? Or was she just pander-bearing while in the nation’s gay mecca? Regardless, the First Lady wins the Oscar for Best Nuance for this clip from her speech at the California Academy of Sciences:

And let’s not forget how my husband appointed those two brilliant Supreme Court justices. (Applause.) And let’s not forget how, for the first time in history, our daughters and our sons watched three women take their seats on our nation’s highest court. (Applause.) And we are now feeling the impact of those court decisions and what effect that will have on our children’s lives for decades to come — on their privacy and security, on whether they can speak freely, worship openly, and, yes, love whomever they choose. (Applause.) That’s what’s at stake. That’s the choice we’re facing.